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author | 2011-09-20 14:20:48 +0000 | |
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committer | 2011-09-20 14:20:48 +0000 | |
commit | 923f10c1dbf6234d1a2ab1a268fe7b81a3841198 (patch) | |
tree | 7a739a01c96a4dbbf7a2e430ceac18b8ac3aeb65 | |
parent | 5402c1b9a0d8a1e61e1a3179ed694c6923e09990 (diff) | |
download | mandoc-923f10c1dbf6234d1a2ab1a268fe7b81a3841198.tar.gz mandoc-923f10c1dbf6234d1a2ab1a268fe7b81a3841198.tar.zst mandoc-923f10c1dbf6234d1a2ab1a268fe7b81a3841198.zip |
Using user-defined macros, surprisingly, it is possible
to have *next*-line head arguments on the *same* input line.
So .TP must not assume that a head argument with a matching
input line number is a same-line argument (and access a NULL pointer).
Bug found and fix tested by kristaps@ with groff_hdtbl(7).
-rw-r--r-- | TODO | 6 | ||||
-rw-r--r-- | man_term.c | 4 |
2 files changed, 7 insertions, 3 deletions
@@ -1,6 +1,6 @@ ************************************************************************ * Official mandoc TODO. -* $Id: TODO,v 1.121 2011/09/18 16:43:28 schwarze Exp $ +* $Id: TODO,v 1.122 2011/09/20 14:20:48 schwarze Exp $ ************************************************************************ ************************************************************************ @@ -350,6 +350,10 @@ Several areas can be cleaned up to make mandoc even faster. These are * structural issues ************************************************************************ +- We use the input line number at several places to distinguish + same-line from different-line input. That plainly doesn't work + with user-defined macros, leading to random breakage. + - Find better ways to prevent endless loops in roff(7) macro and string expansion. @@ -1,4 +1,4 @@ -/* $Id: man_term.c,v 1.119 2011/09/20 13:13:23 schwarze Exp $ */ +/* $Id: man_term.c,v 1.120 2011/09/20 14:20:48 schwarze Exp $ */ /* * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> * Copyright (c) 2010, 2011 Ingo Schwarze <schwarze@openbsd.org> @@ -640,7 +640,7 @@ pre_TP(DECL_ARGS) /* Calculate offset. */ if (NULL != (nn = n->parent->head->child)) - if (nn->parent->line == nn->line) + if (nn->string && nn->parent->line == nn->line) if ((ival = a2width(p, nn->string)) >= 0) len = (size_t)ival; |